import java.util.Scanner;

public class numerology081114 {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        String[] input = scan.nextLine().split(".");

        long day = Long.parseLong(input[0]);
        long month = Long.parseLong(input[1]);
        long year = Long.parseLong(input[2]);
        String user = input[3];

        long sum = day * month * year;
        if (month % 2 == 1){
            sum *= sum;
        }
        for (int i = 0; i < user.length(); i++){
            char letter = user.charAt(i);

            if (letter >= '0' && letter <= '9'){
                sum += letter - '0';
            }
            else if (letter >= 'a' && letter <= 'z'){
                sum += letter - 'a' + 1;
            }
            else if (letter >= 'A' && letter <= 'Z'){
                sum += 2 * (letter - 'A' + 1);
            }
        }
        while (sum > 13){
            int allSum = 0;
            while (sum > 0){
                allSum = allSum + (int)(sum % 10);
                sum /= 10;
            }
            sum = allSum;
        }
        System.out.println(sum);
    }
}